Feeding equipment of injection molding machine

The invention provides feeding equipment of an injection molding machine, and relates to the technical field of injection molding machines. A discharge port is formed in the charging barrel, and the nozzle can be opened, closed and plugged at the discharge port; the opening and closing mechanism can act on the nozzle and drive the nozzle to move relative to the charging barrel; and the back-flushing mechanism comprises a storage box and a pushing assembly, the storage box is used for storing the injection molding raw materials in the molten state, a back-flushing pipe is arranged on the storage box in a communicating mode, the end face of a spraying opening of the nozzle can abut against the back-flushing pipe, and the pushing assembly is used for extruding and pushing the injection molding raw materials in the storage box. When the nozzle is blocked and needs to be dredged and cleaned, the end face of a spout of the nozzle abuts against the backflushing pipe. And then the nozzle is driven by the opening and